ударник означава в английски

cock [cocks]▼(hammer of a firearm trigger mechanism)
noun
[UK: ˈkɒk] [US: ˈkɑːk]

firing pin▼(part of the firing mechanism)
noun
[UK: ˈfaɪər.ɪŋ pɪn] [US: ˈfaɪr.ɪŋ ˈpɪn]

udarnik▼(shock worker, super-productive worker in the Soviet Union and the other countries from the Soviet Block, see also: Stakhanovite)
noun